Evidence map›Paper›PMID 40597616›Full record

ArticleBMC plant biology2025

Boosting drought resilience: the role of endophytic Bacillus safensis in enhancing melatonin production in chickpea cultivars.

Asra Karimian, Bahman Bahramnejad, Adell Siosemardeh, Hemn Salehi, Nariman Salih Ahmad

Abstract read
In one paragraph

Article in BMC plant biology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.

0numbers the graph read from it
0cells of the map it votes in
2citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

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3 · Its place in the literature

Who cites it

2 citing papers in PubMed.

  1. Article
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

5 authors.

Asra KarimianFaculty of Agriculture, Department of Plant Production and Genetics, University of Kurdistan, Sanandaj, Iran.
Bahman BahramnejadFaculty of Agriculture, Department of Plant Production and Genetics, University of Kurdistan, Sanandaj, Iran. b.bahramnejad@uok.ac.ir.
Adell SiosemardehFaculty of Agriculture, Department of Plant Production and Genetics, University of Kurdistan, Sanandaj, Iran.
Hemn SalehiFaculty of Agriculture, Department of Plant Production and Genetics, University of Kurdistan, Sanandaj, Iran.
Nariman Salih AhmadCollege of Agricultural Engineering Sciences, Department of Biotechnology and Crop Science, University of Sulaimani, Kurdistan, Iraq.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Drought stress significantly affects global crop yields, necessitating innovative strategies to enhance plant resilience. This study explored the role of the endophytic bacterium Bacillus safensis COBR7 in promoting melatonin biosynthesis and drought tolerance in two chickpea (Cicer arietinum L.) cultivars, Samin (drought-tolerant) and ILC3279 (drought-sensitive). Melatonin biosynthesis genes in chickpeas were identified by comparing homologous sequences from closely related species in the NCBI database using the BLASTP method. Four TDC (Tryptophan decarboxylase), two SNAT (Serotonin N-acetyltransferase), seven COMT (Caffeic acid O-methyltransferase), and one ASMT (N-acetylserotonin O-methyltransferase) genes were identified in chickpeas. We examined their expression by real-time PCR under two conditions (inoculated and non-inoculated with bacteria) and three irrigation conditions (control, moderate drought, and severe drought). Inoculation with B. safensis significantly enhanced the expression of ASMT, COMT, and TDC genes, particularly under severe drought stress, with the highest expression levels observed in the inoculated plants. Gas chromatography-mass spectrometry (GC-MS) analyses revealed that melatonin concentrations increased under drought conditions, with inoculated samples exhibiting higher levels than non-inoculated controls. In this study, drought stress- and treatment-induced changes were observed in other metabolites (amino acids, sugars, and organic acids) in both cultivars. OrthoVenn2-based comparative genomic analysis identified 544 conserved orthologous gene clusters shared between C. arietinum and B. safensis, including stress-responsive genes (e.g., superoxide dismutase, ACC deaminase) and metabolic pathways critical for drought adaptation, such as tryptophan biosynthesis—a precursor for melatonin. These shared clusters suggest a synergistic interaction in which B. safensis COBR7 primes melatonin-mediated drought tolerance in chickpea, potentially through the bacterial provision of tryptophan-derived intermediates or the modulation of plant stress signaling. This highlights COBR7’s role as a bioinoculant to enhance resilience in water-limited agroecosystems.

Indexed as

BacillusCicerEndophytesMelatoninDrought ResistanceDroughtsGene Expression Regulation, PlantPlant ProteinsStress, PhysiologicalMelatoninPlant ProteinsAbiotic stressASMTBacillus safensisGC-MSGene expressionMelatoninReal-time PCR

Identifiers

PMID40597616
PMCPMC12211182

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.